Universal multiple-operation machine



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l.. H. STEIN UNIVERSAL MULTIPLE OPERATION manina Filed sept. s. 1924 16sheets-sheet s (7M/@M Mmffm'/ 1,627,934 May 10 1927' l..v H. STEINUNIVERSAL MULTIPLE OPERATION MACHINE Filed Sept. 8. 1924 16 Sheets-Sheet9 May I0, 1927.

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L. H. STEIN UNIVERSAL MULTIPLE OPERATION malus l Filed sept. s. 1924l115 Sheets-sheet 11 lll lll May l0 1927. 1,627,934

L. H. STEIN UNIVERSAL MULTIPLE OPERATION MACHINE l Filed Sept. 8. 192416 Sheets-Sheet 12 May 1o, 1927.

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L. H. STEIN l UNIVERSAL MULTIPLE OPERATION mouw:

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L.. H. STEIN UNIVERSAL MULTIPLE OPERATION MACHINE Filed Sept. 8. 19241,6 Sheets-Sheet 16 HELE/75E OPEFHT/ON Patented May 10, 1927.

UTE STATESv PATENT OFFICE.

LOUIS II. STEIN, OF CHICAGO, ILLINOIS, ASSIGNOR TO STR-OMBERG MOTORDEVICES COMPANY, 0F CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

UNIVERSAL MULTIPLE-OPERATION MACHINE.

Application filed September 3, 1924. Serial No. 736,419.

My invention relates to metal working machines for performing a seriesof operations such as drilling, counterboring, tapping, slotting,milling and the like, upon a piece or blank.

rlhe device of my inventionrela-tes to that class of machines whicharetermed sem1- automatic machines. There are many articles or machineelements which require a number of different operations to be per formedupon them. Broadly, this has been performed heretofore by the turretlathe and screw machines where the article or element has an airisoit-rotation common to the various cuts which are made onor in it.

New where the article is of an irregular shape or contour, having nocommon anis of rotation with respect to the operations to be performed,such procedure .as is taught by the turret lathe is not available. Ihave, in accordance with the present invention devised a machine forperforming the successive operations by a novel arrangement ofcooperating mechanisms embodying, I believe, a new principle. I have`conceived the idea of carrying the piece or article through 4a definitepath orcircuit, and performing successive operations at successiveposit-ions.v t each position a different operation is performed andsuccessive pieces proceed in regular fashion through the successivepositions. The chucks or work holders may be permanently attached to thecarrier and move through a` closed path or they may be detachable andthe carrier or conveyor move through the closed path.` If

desired the carrier or conveyor may be divided in sect-ions fed inregula-r succession through the machine. The. real gist of the inventionresides in the progressive-and continuous automatic advance in a seriesoi steps from station to station where successive opei tions'areperformed.

The pieces are all operated on simultaneously and they all advance orare stepped forward simultaneously between operations. In order to dothis most advantageously, the work upon the piece or article is sodivided up that no one operation will take longer than another withinlimits, and the lower` limit as to time of operation is the timerequired for inserting a blank into the machine and taking out alinished'article or where two successive positions may be devoted tothese two operations the lowerl limit is then the time required eitherfor inserting the blank or for taking out the inished article during somuch of the circuitas is devoted to inserting, changing, and removingthe work.

This principle of dividing the work up into relatively short stepsprogressively carried on automatically at successive stations o-ndi''erent centers and all perform simultaneously and within a commonperiod of time, is, so far as I know, broadly new. The number otoperations that may thus be performed simultaneously is not limited tothe number' of operations upon a common center or. from a. commondirection. 'The operations may be extended to any desired number withinlimits.

In theembodiment which I have constructed and operated and hereinillustrated, all of the operations are performed by cutting tools movedin the same direction to and from the work; that is to say, in thismachine the spindles are all vertical and parallel. The principle may beextended to the performance of operations in two or more planes; that istosay, the cutting tools may be set at different angular positions withrespect to each other, all within the y broad teaching of the presentinvention. But in the machine which I have constructed and operated, Ikeep all the working heads in the same general position and to secure acutting or forming operation upon the article in a different plane, Ichange the 4position of 4the work for operation in such different planeor direction. I also wish to point out that the machine is not limitedto one man operation, but may bev extended to operation by more than oneoperator or attendant. In such case, the operations are again all timedso that all automatic operations are timed with to be coextensive andcontemporaneous with the hand operations.

lNow while I have illust-rated a speciiic piece and a specific machinefor operating upon the piece, it is to be understood that the principlesof my invention are not restricted to the particular machineillustrated. nor to the work vupon the sneciie piece herein illustratedand described;

In the accompanying drawings I have illustrated a specic embodiment ofmy invention. o

lFig. l is a plan view of a machine embodying the invention;

Fig. 2l is a vertical section taken on the line 2 2 of Fig. 1 showingcertain of the parts in elevation;

Fig. 3 is a horizontal section taken on the line 3 3 of Fig. 2;

Fig. l is an enlarged horizontal section taken on the line 4 4 of Fig.2;

Fig. 5 is a similar section taken through the main driving shaft on theline 5 5 of Fig. 2;

Fig. 6 is a vertical axial section on an enlarged scale taken on theline 6 6 of Fig. 1;

Fig. 7 is a fragmentary section taken on the line 7 7 of Fig. 2;

Fig. 8 is a fragmentary elevational view 0f the clutch and cam controltherefor, as viewed on the line 3 8 of Fig. 7;

Fig. 9 is a plan view of a cam collar for timing the operation of theworking head;

Fig. 10 is a fragmentary horizontal section taken on the. line 10-10 ofFig. 6 illustrating the change speed gearing for controlling the timingof the cutting operation on the piece;

Fig. 11 is a similar view taken on the line 11 11 of Fig. 6 showing adifferent change speed gea-.ring for the same;

Fig. 12 is a plan view of the tim-ing cam for timing the advance of thework;

Fig. 13 is a fragmentary horizontal section taken on the line 13 13 ofFig. 6 showing a. third. arrangement of the change speed gears forcontrolling the operations on the piece;

Fig. 14 is another timing cam for controlling the tahle advance;

Fig. 15 is a view similar to Figures 10, 11 and 13 showing a diderentratio of change speed mechanism for controlling the timing of the cutterhead;

Fig. 16 is a plan view of a vise or worlr holder for holding the work intwo different positions;

Fig. 17 is a. vertical sectional view taken on the line 1'7 1 of Fig. 16showing the same;

Fig. 1S is fragmentary sectional view taken on the line 13 18 of Fig.17;

19 is a vertical. sectional view taken on the line 19-19 of 16;

Fig, 2O is a vertical sectional View taken on the line 20- 20 of Fig.16;

F 21 and 22 are fragmentary sectional views talen'on lines of likenumber appearing Fig. 1G;

Fig. 23 is a fragmentary sectional view through the drive pulley takenon the line 23-3 of Fig. 24:

Fig. 24- is a horizontal. sect-ion on the line of e;

Fig, 25 is a. vertical sectional view taken on the line 25-5 of Fig. 2;

Fig. 26 is a fragmentary sectional view taken on the line 26 26 of 24-Villustrating the Ways or guides for thel critter heads;

Fig. 27 is a fragmentary section taken on the line 27 27 of Fig. 2illustrating the adjuster for the driving pulley for driving thespindles of Ythe operating head;

Fig. 28 is a fragmentary side elevational view of the cam and arm forcontrolling the timing of the Working or cutter heads;

Fig. 29 is a horizontal section through the cam and timing mechanismshown in Fig. 2S and also shown on the line indicated at 2(3 29 in Fig.2;

Fig. 30 is a horizontal section on the line 30 30 of Fig. 2.

Fig. 31 is a vertical sectional View on the line 31 31 of 2 showing' theholding mechanism for the vertical adjustment of the Working spindles;

Fig. 32 is a horizontal section taken on the line 32-32 of Fig. 2showing the same mechanism;

Fig. 33 is a fragmentary section taken on the line 33 33 of 2 showingthe mounting for the lower ends of the rodswhich hold the spindlemechanisms in vertical adjustment;

Fig. 311 is a fragmentary sectional view on the line 34e-34 of Fig. 2showing the clutch for clutching the cam to its operating shaft;

Fig. 35 is a fragmentary view taken on the line 35-35 of Fig. of thesame;

Fig. 36 is a sideelevational view and Fig. 37 a horizontal sect-ionthrough the upper bearing for the lay shaft for the change gearmechanism shown in 2;

Fig. 38 is vertical sectional view through one of the operating headsshowing a slotting saw;

Fig. 39 is a side elevational vie-w of the same;

40 is a horizontal section taken on the line .tO-4.10 of Fig, 33

Fig. l1 is a similar horizontal section taken on the line 1 41 of Fig.3S showing' the reducing gearing;

-12 is a diagram illustrating one cycle of operation;

Fig. 113 illustrates another cycle of operation;

Fig. 44 illustrates with a` sample article the diagram of operationshown in Fi 4t2;

Fig. 45 is a diagram illustrating six operations to be performed asillustrated in the diagram of-Fig. 42;

Fig. 4G as an isometric view of the part worked upon hy the machine;

Fig, l? is a plan view of the part illus- 2 showing another detailnea/,eea

machine herein illustrated is designed to perform a number of operationssuccessively upon successive pieces, and to this end ,l employ a carrier1 which consists of a rotating disc or platen for convenience inconstruction and operation, although it is to be understood that theinvention is not to be limited to movement in a single plane nor tomovement in a `horizontal direction only. Assume that the disc 1 ismounted on a central spindle and is arranged to be vadvanced one-eighthof a revolution in steps timed according to a certain time interval tand permitted to' rest in position between movements for the purpose ofpermitting the work to be operated upon at each station. in the examplethat l have chosen to illustrate there are eight successive stationscorresponding to the eight positions, but it willy be understood thatthis is merely illustrative and not limiting. Assume'that the operatorstandsl between stations 1 and 8 and that the carrier 1 has means suchas chuclrs which will be described later, for holding pieces of worlr tobe operated upon at points or positions equidistant angularily on thecarrier 1. Assume also that at each of positions 2 to 7 inclusive anautomatic operating tool is stationed, now it maybe seen that if thesetools are arranged in the order in which they are to operate upon thework at successive stations and that these tools are first lowered intoengagement with the work simultaneously and then withdrawn, the carrier1 may be set forward by one step and successive pieces will be fastenedin the chucks at position 1 and linished articles taken olf at position8, six successive steps may be performed.

Now it is to be understood that the sin operations which l have shownneed not be performed all at the same point upon the article; forexample, assume that three operations are to be performed at one pointand three at another, and that these operations compriserespectivelydrilling, counterboring, and tapping two holes as isillustraied in the diagram of 42. That is to say, assume that atposition 2 the piece 11 is to be drilled on one center as indicated, atposition 3 the hole is to he counter-bored, at position 4 the lower endof the hole is to be tapped, at position 5 another hole is to bedrilled, at position (i the second hole is to be counter-bored, and atposition 7 the lower end lof the second hole is to bev tapped. Theseoperations are merely illustrative and not limiting. lnstead ofdrilling, counterboring, and tapping and linstead of operating at twopoints, different operations and operations at either the same point orat different points may be carried on. Vhere the operations are to beperformed upon the piece, such as 11, from different directions l preferto perform all of the operations in one line, plane o r direction andthen rechuclr the piece in a different position and then have the otheroperations performed. For example, in Fig. 43, l have shown theoperators station as between stations 1 and 8 and employ spindles atlpositions 2, 3, 4, 5, 6 and 7 only. In this case operations are carriedon in one plane or one position at sta-- tions 2, 4, and 6 whereupon thepieces are rechuclred and then the next step of operation is performedat positions 3, 5, and 7. lt will be understood that all stations neednot operate upon the piece, and as will be apparent later thepositioning of the operating heads at their stations may be varied inorder to secure the desired effect upon the piece of work.

'lhe particular work to which I have applied the machine in the presentinstance is the drilling, counter-boring, tapping and siotting of amixture regulating tube holder shown in Figs. 46 and 47. lt will benoted that this comprises a split clamp member 12., comprising a centralhole and clamping ears 13 separated by a slot. These ears are drilled,counter-bored and tapped to receive a machine screw for drawing themtogether in order to shrink the size of the hole in the split clamp `tov'fasten the device upon a suitable mounting stem. The opposite end ofthe holder comprises also a split clamp for holding a small bored tubesuch as is used in a Bowden cable construction for operating a valve fora carburetor. rlhe piece is made of a stamping of cold rolled sheetmetal and a split clamp at 14 is formed by the two sides ofl thestamping which are `slightly separated as indicated at 15 and a tubularopening is formed at the outer end of the split clamp in order toreceive the cylindrical tube which is to be clamped. Th, two sides ofthe clamp 14 are drilled` counter-bored and slotted as is indicated atthe hole 16.

Assume that in manufacturing,the holder shown in Figs. 46, and 47 and48, itwere first desired to ream the hole 12 in a split clamp, nent tomill the slot 17, then drill, counter-bore and tap the hole 16 all inthe same plane or from the saine position. rlhe operations would then belaid out on the machine as shown in Fig. 44. As so laid out, five out ofthe seven possible positions are employed; the seventh position asnumbered on Fig. 44 is idle; the eighth position is employed forreleasing the nished holder, andthe first position is employed forchuclring the blank.

I have indicate-:il in Fig. 45 how six operations may be performed suchas drilling, counter-boring and tapping two holes which may be laid outas shown in Fig. 42 or laid out as shown inFig. 43.

Now, the actual production of the piece shown in Figs. 46 to 48 requirestwo operations in two planes, since the hole l2 for the split clamp 13is to be drilled, counterbored ta )eed and slotted the hole l2 is not Ia ll a The carrier cmd its mounting.

The machine shown comprises the revolving table o-r carrier l0, which ismounted for rotation in a horizontal plane upon a stubshatt 20 whichstub-shaft 2O (see Fig. 6) is mounted axially in alignment with andtelescoped with the main shaft 2l. The stubshatt 2O has a reduced upperend, as shown at 22, Fig. 5 keyed and locked into the hub ot the tablelO. The shaft has a bearing in the bronze bushing in 24, mounted in abox 25, forming a part ot' the upper frame plate 26. i

This cylindrical bearing 24 serves to hold the table l0 radially inposition and the stubshatt 20 serves to transmit intermittent motion tothe table l0 for advancing the same by a step by step motionl throughthe intermediary of the Geneva mechanism,l which is shown incross-section Fig. at 27. (The Geneva mechanism is shown in plan viewinV Fig. The low r end et stub-shaft 2 0 is recessed shown at 28 toreceive the antifriction bushing 29, which forms a bearing for thereduced upper end 30 of the main shaft 2l. Upon the lower end of saidstubshatt 20, there is keyed the hub` and web member 3l, to which isbolted the Geneva gear 32, the cooperating Geneva pinion 33 will bedescribed later.

The vertical thrust of the carrier or table 10 is supported upon a largeanti-friction bearing 34, this bearing comprising a hardened ring 35bolted as by means of the machine screws 3G to the bottom ot the tablel0, and comprising further a similar hardened plate or ring 87 bolted tothe top frame plate 28, these rings beine separated by suitableanti-'friction bearings in this case shown as the ball-bearings 88. Theball-bearings 38 are guided between` two hardened rings 39 and A40,these rings together wit-h the lower ring` 37 forming a suitable raceway for holding the bearing roller 38. lt is to be noted that thisbearing 34 is disposed in such a manner as to receive most .of thethrust ot the operating heads directly. The table l0 supports atequidistant points the eight chucks or work supports 4l. The worksupports shown in these drawings really constitute two chucks. They areall alike and are interchangeablel and are adapted to facilitate theehueking and unehucking or 'releasing` of the pieces which are tedthrough the machine and which constitute the work.

The lower end ot vthe main shaft 21 has a radial bearing in theanti-friction bushing 43 formed in the upper end of the boss or box 44,and has a thrust bearing 45 'formed in the lower part of said boss orbox 44. This thrust bearingl comprises an upper ring` or race-way 46, alower ring or race-way 47 and anti-friction Vrollers 48 between saidraces. The. lower endv of the shaft 2l is reduced as indicated, at 49 toiit snugly within 'he upper race ring 4 6 and to iit loosely int-o thelower. race ring 47. The boss or box 44 has a base flange 50, which isclamped as by means of machine screws 5l upon the top plate 52 of thebase member 53. A central boss 54 is formed below the box 44 to sustainthe weight ot the main shaft. The base has a suitable clamping orbolting flange for mounting the machine upon the Hoor. A iframe in theshape of a barrel or housing 55, extends up from the base plate 5,2 tothe top plate 26. The table or carrier l() has a downwardly extendingflange or skirt 55, which overhangs the edge of the top plate 26 andprevents the entry of dirt and toreign matter, and particularly protectsthe bearing 34. It will be noted from Figure 6 that the stub-shaft 2.0is drilled as indicated at to permit Oiling of the radial bearing 24 andthe telescope bearing 29'y between the stub-shaft and the main shaft.

The working heads.

The working heads 57, 58, 59, 60, 6l and 62 are disposed upon the barrelor the frame housing 54 will be more particularly described in detaillater. These working heads are disposed at equiangular stations in thepresent instance at sin of eight equidistant stations 45l degrees apart.

These working heads are all alike tothe extent of having the same frame,driving and feeding mechanism and being all adapted tol receive.suitable working tools which may be varied. as desired to perform vtheparticular operations.

Referring now to the operating head at 59 which is shown in sideelevation in Fig. 2, it will be seen that the same has a goose necktrame 63 biturcated at its upper en d 64 to receive the central drivingpulley 65. At its lower end the goose neck frame 6,3 has a base 6G (seeFigs. 2 and 23) which is clamped upon a, suitable slide or carriage 67,this carriage 67 is mounted upon a clovetailed slide member 68 whichholds the carriage 67 firmly in place but permits adjustment radiallywith respect to the barrel and to the carrier 1Q. The dove-tail guide 69ts into a corresponding recess thecarriage llt)

